Circuit Breakers

Having an effective and well-designed circuit protection system in every building is vital. It not only protects machinery and equipment from costly damage or even worse an electrical fire, but good circuit protection also ensures people are safe too.

Here, at RS we stock an extensive range of high-quality products within our circuit breaker range. They include various types of protection devices as well as consumer units, distribution boards and accessories. Whether you are designing and building a new system or maintaining an old one we have everything you need, providing the perfect end-to-end solution.

What are the different types of circuit breakers?

RCBO Breakers

RCBO stands for Residual Current Circuit Breaker with Over Current protection. Installed in consumer units they protect from short circuits, overload current and residual current as they combine all the functions of an MCB and an RCCB.

RCCB Breakers

RCCB stands for Residual Current Circuit Breaker. They are designed to quickly disconnect any circuit as soon as current leaks to the earthing wire. RCCBs are also effective in protecting from electrocution or shock from direct contact.

MCB Breakers

MCB stands for Miniature Circuit Breaker. They are designed to protect an electric circuit from overcurrent only. They do not safeguard people from electric shock caused by earth leakage.

MCCB Breakers

MCCB stands for Moulded Case Circuit Breaker. They are another type of electrical protection device used in higher current rating applications where an MCB would not suffice. An MCCB protects against overload and short circuit faults. With its high breaking capacity and a wider range of current ratings, MCCBs are typically found in industrial systems rather than domestic systems.

Busbar Feed & Tap-Off Units
Busbar Feed & Tap-Off Units
Busbar Trunking
Busbar Trunking
Busbar Trunking Accessories
Busbar Trunking Accessories
Busbars
Busbars
Circuit Breaker Accessories
Circuit Breaker Accessories
Circuit Trips
Circuit Trips
Consumer Units
Consumer Units
Distribution Boards
Distribution Boards
Electronic Circuit Breakers
Electronic Circuit Breakers
Energy Monitoring Devices
Energy Monitoring Devices
MCBs
MCBs
MCCBs
MCCBs
RCBOs
RCBOs
RCCBs
RCCBs
Surge Protection Devices
Surge Protection Devices
Thermal Breakers
Thermal Breakers

35871 Products showing for Circuit Breakers

24 of 999+
Better World
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator
  • RS Stock No. 219-8902
  • Mfr. Part No. KNB50SN4
Each
HK$3,013.15(exc. GST)
Better World
Siemens SENTRON 5SL4 MCB, 1P, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6451
  • Mfr. Part No. 5SL4106-8
Each
HK$337.40(exc. GST)
Siemens SENTRON Short circuit alarm switch for use with 3VA1 250/400/630
  • RS Stock No. 210-3532
  • Mfr. Part No. 3VA9988-0AB34
Each
HK$294.30(exc. GST)
Siemens SENTRON 3VA9 Wire Connector for use with 3VA1 100/160
  • RS Stock No. 218-1789
  • Mfr. Part No. 3VA9114-0JF60
Each
HK$1,146.80(exc. GST)
Siemens SENTRON 5SJ4 MCB, 2P, 16A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 212-8818
  • Mfr. Part No. 5SJ4216-7HG41
Each
HK$1,169.60(exc. GST)
Europa EUC1P EUB MCB, 1P, 20A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6471
  • Mfr. Part No. EUC1P20B
Each
HK$62.00(exc. GST)
Contactum RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6384
  • Mfr. Part No. CCPBR0616AB
Each
HK$212.00(exc. GST)
Siemens SENTRON Kit for use with Manual Operators 3VA 3VA2 100/160/250/400/630
  • RS Stock No. 218-3322
  • Mfr. Part No. 8UD1900-0KA20
Each
HK$362.30(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP 1A Single Pole 250V ac Voltage Rating On Base Element, 1A Current Rating
  • RS Stock No. 801-6892
  • Mfr. Part No. 0712194
Each
HK$121.40(exc. GST)
Schneider Electric, ComPacT MCCB 4P 200A, Fixed Mount
  • RS Stock No. 260-7953
  • Mfr. Part No. C25N4TM200
Each
HK$21,743.03(exc. GST)
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8099
  • Mfr. Part No. C40F42D400
Each
HK$38,203.72(exc. GST)
Siemens SENTRON Trip Alarm Switch for use with 3VA4/5/6
  • RS Stock No. 155-293
  • Mfr. Part No. 3VA9978-0AB13
Each
HK$360.00(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 4P, 20A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-8093
  • Mfr. Part No. 2CDS274001R0205 S204M-B20
Each
HK$1,109.10(exc. GST)
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-049
  • Mfr. Part No. KV 9354 M
Each
HK$2,903.31(exc. GST)
Siemens SENTRON Wire Connector for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9370
  • Mfr. Part No. 3VA9303-0JF60
Each
HK$849.50(exc. GST)
Siemens 3ZY1121 Removable Terminal for use with SIRIUS devices
  • RS Stock No. 203-4007
  • Mfr. Part No. 3ZY1121-1BA00
Each (In a Pack of 6)
HK$115.933(exc. GST)
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-358
  • Mfr. Part No. 3VA5320-6EC41-0AA0
Each
HK$15,031.20(exc. GST)
Siemens SENTRON 3VA9 Cover for use with 3VA1 250
  • RS Stock No. 218-1811
  • Mfr. Part No. 3VA9211-0WD40
Each
HK$196.60(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7564
  • Mfr. Part No. 2CDS252001R0205 S202-B20
Each
HK$449.30(exc. GST)
Siemens SENTRON 3VA9 Cover for use with 3VA1 100/160
  • RS Stock No. 218-1781
  • Mfr. Part No. 3VA9111-0WG40
Each
HK$341.60(exc. GST)
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